Intensity Spikes in Laser Filamentation: Diagnostics and Application
We present calculations with subcycle precision of laser-driven filamentation in argon which show that the laser peak intensity can exceed the clamping intensity by a factor of 3 during recurring spikes which can last over several centimeters of propagation. The high intensity occurs during a few-femtosecond subpulse in the trailing edge of the main pulse and gives rise to isolated 500 attosecond, 2 pJ pulses which can be extracted from the filament. We also show that the high harmonic radiation emerging from the filament is an excellent diagnostic of the intensity spikes. © 2009 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review Letters
Gaarde, M., & Couairon, A. (2009). Intensity Spikes in Laser Filamentation: Diagnostics and Application. Physical Review Letters, 103 (4) https://doi.org/10.1103/PhysRevLett.103.043901